Evidence of rotational behavior in ¹²⁰Te isotope

Numerous experimental and theoretical studies are currently focused on nuclear shell structure far from the line of stability. In particular, the evaluation of nuclear properties, e.g., the energy of the first excited 2⁺ state and the reduced transition probabilities across closed shell Z = 50 are area of great interest. The Te nuclei with 52 protons lie in the transitional region between the spherical nuclei, and deformed Xe and Ba nuclei. The energies of the first excited 2⁺ and 4⁺ states reveal vibrational patterns almost throughout the isotopic chain except in the vicinity of A = 134. The B(E2↑) values for the 2⁺ →0⁺ transitions are predicted to follow a parabolic behavior around the neutron mid shell, reaching their maximum at ¹¹⁸Te. This observation is quite in contrast to the measured quadrupole moments Q2⁺ for the doubly even Te isotopes. These quadrupole moments can reach 60% of the one predicted by the symmetric rigid rotor